Q: what causes transmission to not shift? 2001 Dodge Ram 1500

asked by on August 30, 2016

transmission shifts smooth and fine but once truck has been running a while will not shift to second. seems like once it heats up it starts doing that. i was having similar problem several months ago but had sensor, oil and filter changed and worked great for about two months. oil level is good, oil is clean and still looks new. i don't smell any oil, there are no leaks. what could it the causing this problem?

My car has 159000 miles.
My car has an automatic transmission.

Speed Sensor Replacement $92.92 - $1189.26 Get a Quote
Car is hard to shift Inspection $79.99 - $89.99 Get a Quote

Hey there, thanks for writing in about your 2001 Dodge Ram 1500. This is a common issue on many automatic transmissions. There is a speed sensor which is a magnetic coil that tells the vehicle’s control module what the speed of the torque converter is and allows the truck to shift smoothly. When this is faulty, it will cause a delay in shifting or cause it to not shift at all. To have the problem verified, a certified technician from YourMechanic can come to your car’s location to diagnose the shifting issue and perform needed repairs.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Transmission acting up causing car to shake and loose acceleration.

Hello, with a fault like that there is a good chance that a code has been set in the traction system, transmission, and engine control. A scanner will need to be connected to check the system. The most likely cause...

Truck is slow on take off have rebuilt engine and transmission but wont take off like it should

The transmission would need to be checked to see if it is starting in first gear and shifting up through the gears. You should also make sure the ignition timing is set correctly. Your transmission may be starting in second...

Car died and clear, greenish substance on top of engine

The only fluid I know that has a green tint is coolant. You may have leaked out all the coolant or the coolant shorted out the ignition system. Check the coolant level after the engine has cooled down. If it...

Changing from regular oil to synthetic oil

Synthetic vs conventional oil is one of the most debated myths surrounding the topic of oil changes. This will not hurt your engine when switching from synthetic to conventional or vice versa. In fact, Synthetic blend oils are actually a...

What would make timing chain fail after replaced

The chain can fail due to lack of proper lubrication to the chain or camshaft on that side of the motor. I would recommend having the engine oil passages cleaned and engine oil flush used to try and dissolve any...

How do I properly install a transmission pan back on?

When installing the pan, the mating surfaces of the transmission and the pan should be clean, dry, and free of debris. To assure a good seal, I will usually use some brake cleaner, acetone, or any other type of solvent...

Multiple problems on a 1996 Jeep Grand Cherokee

Hi there. From the description you have provided, there are multiple problems going on with your vehicle, so the faults may or may not be related. Although the car is showing many symptoms, this may not be terminal. It could...

Smelling gas and bad gas mileage

There are a number of things that can cause poor fuel mileage. A faulty camshaft position sensor is one of them. The camshaft position sensor is a magnetic sensor that monitors camshaft speed to regulate ignition timing and fuel injection...

How to remove an aftermarket alarm?

Hi there. Locate the controller to the aftermarket alarm on the vehicle and follow the power wires to the fuse box or electrical wiring in the vehicle. If the wiring goes to the fuse box, locate where the wire is...

Related articles

What Is the Shelf Life of Motor Oil?
If you plan on storing your oil, it's good to know how long motor oil lasts. Store your motor oil in a cool, dark place to make your oil last longer.
How to Properly Store Motor Oil
Some drivers like to store oil for future oil changing needs. Keep the container sealed and in a cool, dark place to make your oil last longer.
Do Cars Need Oil Changes More or Less Often As They Age?
Car engines wear out as miles add up. Older engines and engines with high mileage have lower tolerances, making more frequent oil changes necessary.